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N. PETERS, Phaxu-Limognpmn washingtun, D. C.

(No Model.) 3 Sheets-Sheet 2.

vC. W. SIEMENS.

GAS PRODUCER.

No. 282,387. Pai-,ema July 31,1883.

3 Sheets-#Sheet 3.

(N0 Model.)

n.w. SIEMENS.

GAS PRODUCER.

No. 282,387. Patented July 31, 1883.

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N. PLYERS. Phmmnagnpher. wwungmn. u4 a w; UNITED- STATES PATENT. omet.

CHARLES w. SIEMENS, or WESTMINSTER, coUNrY or MIDDLESEX, ENGLAND.

GAS-PRODUCER.-

SPECIFICATION forming part of L'ettersPatentfNo. 282,387', dated July 31, 1883.

Application filed August 1882. (No model.) Patented in England August 19, 1880, No. 3,374; in France January 31, i881,

No. 140,857;.in GermanyFehrnary 2, I1881, N0.16,223, and in Belgium February 24, 1581, No. 53,937.

To a/ZZ whom it may concern: e i

` Be it known that I, CHARLES WILLIAM SIE- MENS, a subject of the Queen of Great Britain,l residing at Vestminster, in the county of MiddleseX, England, have invented certain newY and useful Improvements in AGras-Producers;

and Ido herebyV declare the following to be a full, clear, and exactdescription of the invention, such as willenableothers skilled in the Io art to which it apperta'insto make and usethe same.`

My invention relates to gas-producers; and

it consists in the methodhereinafter described of producing combustible gas by the actionof I 5 air or of heated fair under pressure, in some cases mingled with steam, introduced into the heart or body of the kindled fuel.

It also consists inutilizing theheat of thegas thus produced for heating the air supplied to 2o the producer; and, finally, it consists in certain novel combinations of the parts of which the producer is composed. e

In theproducer constructed according to jmy invention solid fuel-such as coal, coke, anthracite, lignite, peat, and the like-is acted on by jets of air or of heated air, in some cases mingled with steam, under the influence of which the fuel is rapidly decomposed, itsl carbonaceous and .hydrogenous constituents forming 3o combustible gases with the constituents of the air and steam,while its earthy ingredients drop in a fused or partly fused condition through the openings in the bottom of theproducer The current of air is conductedupward into the producer in suchamanner as to be discharged into the heart of the mass of fuel where the maXimum heat is produced. The fuel in its descent from a hopper reaches gradually this region of maximum heat, having parted with all or most 4o of its gaseous constituents. At the point of maximum heat the carbon is consumed, pro-V ducing carbonic anhydride, which, in passing` through considerable thickness of fuel surrounding this portion, takes up a second equiv- `l alent of carbon andbecomes changed tocarbonic oxide. Here, also,l the learthy-constituents are for the most part separated in a fused or semi-fused .e condition, and ,in descending gradually reach an orifice at the bottom ofthe 5o producer, whence they are removed from time to time. Air enters thebottom oriceto Some of the apparatus have to descend through thel 6o hotter fuel below, and in so doing the tar and other vapors mixed up with them are decomposed, and furnish combustible gases of a permanent character.

i The apparatus which I prefer to use is-illustrated in the accompanying drawings, in which Figure I is' Ya part vertical section of a gas-producer with heated air supplied `from below, taken on the lines V V of Fig. 2. Fig. 2 is a part plan ofthe same gas-producer,taken on the 7o lines U Uof Fig. 1.. Fig. Srepresents the supl ply-pipes provided with internal ribs or fins. Corresponding parts are denoted by' the same letters in all the gures.

The producer A consists of a wrought-iron cylindrical chamber, the lower part of which is contracted in a conical form downward and lined with briclcwork. It has at the bottom an opening, under which is placeda dish, B, to receive the cinder, which may be cooled by wa- 8o `ter supplied to the dish by apipc with a stopcock. In the center of-the producer is the air-` supply pipe C, which may extend upward from the/bottom, as shown in Fig. 1, and its end may Y be` protected by refractory material G. The 8 5 pipe C itself Should be of refractory material or metal-such as cast-steel-and may be proi i vided with internal ribs or fins to presentadditional surface to the passing air, and to aid in cooling as well as to strengthen it. The fuel` 9o v A issupplied to the producer by a hopper, D, which has removable covers. The gas produced in A passesv by numerous lateral-channels into an annular space, b, and flue A', whence it is taken to the point required. 95

A producer constructed vas above described may be arranged to operatein connection with aregenerative or other furnace, or a number of such producers may be arranged together, for the supply of one ormore furnaces. Ico

In Figs. l and 2 is shown an arrangement of producers for supplying a vertical shaft, R,

material, K2.

leading to a gasmain, I. `For the purpose of i heating the'air conveyed by the pipes Cl for supplying the producers, the ascending-gas shaft It is surrounded by a casing, K, up which air ascends, as indicated by the arrow k, to a space, K, above, which is protected against loss of heat by a covering of non-conducting From the space K the airis di rected by a steam-j et, G, down a central pipe, K3, to supply the branches C2, leading to the producer, the air being thus heated both in its ascent along the casing K and in its descent along the pipe K3 by conduction from the ascending gas. The hot air from the pipe C2 issues in a jet in the center of pipe C, drawing in around it an additional quantity of air, which also becomes heated as it rises up the pipe C, which may be made with internal fins to present additional heating-surface to the passing` air and to aid in cooling the pipe G itself, as well as to strengthen it.

The'current of air to supply the producer may be produced or accelerated by the injector action of a steam-jet, this jet being supplied from any convenient boiler, or from a boiler heated bythe products of combustion from thc furnace in which the gas is burned; or the current of air may be produced by any other known means. y

Having thus described my invention, I claim and desire to secure by Letters Patent of the the produced gas.

2. The process herein 4described of producing combustible gas by the action of heated air mingled with steam introduced from below into the heart or central portion of the kindled fuel,

and conducting the gas away for combustion. 3. The gas-producer A, having an opening, under which is placed an annular dish, B, to receive the cinder, in combination with the central pipe, C, as and forthe purposes described.

4. The combination of the producer and the air-supply pipeC, extended upward from the bottom, and a gas-eduction pipe, as and for the purposes described.

5. 'The combination of the producer and the pipe C, `which supplies air to the heart of the .supply branches G2, leading to the producers.

9. The combination ofthe ascending shaft It, casing K, and pipe K3, whereby the air is heated in its-ascent and descent bythe heat of C. W. SIEMENS.

Vitnesses: Y Y

E. F. BAMBER, p V

G. W. TURNER. Y f 

